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Regulating the clathrin-coated vesicle cycle by AP2 subunit phosphorylation.
1Division of Cell Biology and Immunology, School of Life Sciences, Wellcome Trust Biocentre, University of Dundee, Dundee, UK. e.smythe@dundee.ac.uk
Trends in Cell Biology
|August 23, 2002
Summary
Reversible phosphorylation regulates clathrin-coated pit assembly and disassembly. Phosphorylation of the AP2 adaptor complex
Area of Science:
- Cell biology
- Molecular biology
Background:
- Clathrin-coated pits mediate endocytosis, a vital cellular process.
- Coat proteins assemble to form pits and disassemble for vesicle fusion and recycling.
Discussion:
- Reversible protein phosphorylation is a key regulatory mechanism for dynamic protein complexes.
- Many clathrin coat components, including the AP2 adaptor complex, are phosphorylated.
Key Insights:
- Phosphorylation of the micro2 subunit of AP2 is crucial for cargo binding.
- This phosphorylation likely regulates the assembly and disassembly cycles of the clathrin coat.
Outlook:
- Further research into phosphorylation sites can reveal more regulatory pathways.
- Understanding these mechanisms is vital for comprehending endocytic trafficking.